James Blake in New Haven, Conn., on Aug. 27, 2015. NYPD Police Commissioner William Bratton had said Wednesday, Sept. 9, 2015, that Internal Affairs officers are investigating a report Blake was roughed up and handcuffed by officers outside the Grand Hyatt in Manhattan. Photo Credit: Getty Images / Maddie Meyer

NYPD Police Commissioner William Bratton said last night internal affairs officers are investigating claims by retired tennis star James Blake he was roughed up and handcuffed earlier in the day by officers outside a midtown Manhattan hotel.

Blake bore a close resemblance to a suspect sought by police, according to a law enforcement source.

"We will investigate it," Bratton said in an interview on New York City cable news station NY1. "I will not tolerate any aggressive use of force," the commissioner said, though he cautioned that the initial reports might not tell the entire story.

Blake, who in 2007 became the first African-American since Arthur Ashe to achieve a top 10 world tennis ranking, told the New York Daily News he was outside the Grand Hyatt hotel in Manhattan when a man in shorts and a T-shirt charged him and threw him to the ground.

The officer did not identify himself as a member of the NYPD, Blake said.

Blake, 35, was erroneously pointed out by the witness before undercover officers moved in to make the arrest, investigators said.

"It shouldn't have happened and it's something that we'll deal with the police and we'll find out what they have to say internally," Blake said outside the hotel Wednesday. "Hopefully there's video of it and people can see what happened."

When asked if the officers said anything first, he said, "No, [they] just rushed."